More than sixty years have passed since the battles of the Great Patriotic War died down on the Kola land. However, the polar tundra and Arctic seas, and often the hills surrounding the remote garrisons of the Northern Fleet, continue to keep the secrets of the past. A book by military journalist S.A. Kovalev is dedicated to the activities of the German Navy in the Soviet North. Based on archival materials and his own research, the author talks about Kriegsmarine operations, which involved ships and submarines that carried out not only combat missions in complete secrecy in Soviet northern waters, but also transported important strategic cargo and served the construction of secret bases and warehouses, many of which have not yet been found. The book opens a new series of the Veche publishing house “Naval Chronicle”, dedicated to the most striking and entertaining pages of naval history.